Richard walter jackson



{No Model.)

R. W. JACKSON.

COMBINATION STOP ACTION POE PIPE ORGANS.

N0. 5203925 Patented June 5, 1894.

UNITED STATES PATENT OFFICE.

RICHARD \VALTER JACKSON, OF CHESTER, ILLINOIS, ASSIGNOR TO THE JACKSON PIPE ORGAN COMPANY, OF SAME PLACE.

COMBINATION STOP-ACTION FOR PlPE-ORGANS.

SPECIFICATION forming part of Letters Patent No. 520,925, dated June 5, 1894.

Applicationfiled August 14, 1893- Serial No. 483,156: (No model.)

To 00% whom, it may concern:

Be it known that I, RICHARD WALTER J AoK- SON, a citizen of the United States, residing at Chester, county of Randolph, and State of Illi- 1101s, have invented certain new and usefulImprovements in Stop-Actions for Pipe-Organs, of WhlGll the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

The object of my invention is to facilitate the transition by the performer from one comb nation of musical stops to another, and to dispense with the third manual of keys commonly used in playing solo parts. For this purpose I provide certain novel slide-shifting devices actuated by a single movement of the foot, for instance, and adapted to be adjusted before-hand so as to shift or leave at rest any predetermined number of slides, whereby the operator may pass instantly from one stop or combination of stops to another. By having a number of such slide-shifters a correspondlng number of transitions may be had without the necessity of readjusting the shifting devices as aforesaid. Thus if a chorus part, for example, has just been completed and a solo part is instantly to succeed, it would ordinarily be necessary for the performer either to manipulate a great number of stops so as to pass from the chorus combination of musical stops to the solo combination, and vice versa, or else a separate and additional manual of keys must be provided controlling only solo combinations of musical stops. WVith my slide-shifting device, however, the performer may instantly, and without taking his hands from the key-board, pass from a chorus combination of musical stops to a solo combination, and vice versa, and the additional manual of keys aforsesaid is dispensed with, my two-manual organ being substantially equivalent to a three-manual organ of the ordinary type.

The invention will be best understood by reference to the accompanying drawings, in which Figure 1, is an isometric view of the mechanism for operating the slides to pass by a single movement of the foot, for instance, from any one combination of musical stops to another. Figs. 2 and 3 are enlarged side views of details pertaining to said device.

The same marks of reference indicate the same parts throughout the several views.

The numerals 5 represent the slides of a pipe organ which slides are situated intermediate the wind-chest 3 and the sound board 4. The slides 5 may be of any ordinary construction, and are operated to move to and fro to permit or prevent the speaking of the pipes, preferably by means of a stop 7, (Fig. 1,) pivotally connected, for example, by a rod 8, to the middle arm 9 of a vertical rock-shaft 6, whose upper arm is pivoted to one end of such slide. As the stop 7 is pushed in or pulled out, the shaft 6 is rocked in one direction or the other, and the slide 5, (for instance) is made to move into or out of register with the perforations in the valve seat for admitting air from the wind-chest to the pipes, so that the pipes controlled by such slide may be made either to speak or to remain silent when the keys and valves are operated. It is clear that by rocking successively the different rock-shafts 6 controlling the various slides of the great organ and swell organ and pedal organ (if any) all possible combinations of musical stops within the range of the organ may be achieved.

In order to change instantly from one such combination of stops to another without separately manipulating the different stops 7, I provide preferably, two parallel horizontal bars 10 adapted to slide simultaneously in opposite directions. Each of the rock-shafts 6 has, besides the arms which are connected respectively to the stop 7 and slide 5, a third arm 11 which projects between the parallel bars 10, and is adapted to move in the slot or space between the bars 10 without touching or disturbing the same when the stop 7 is operated to shift the slide 5. The bars 10 are perforated at intervals for the insertion of the adjusting or removable pins or catches 12,

which may be inserted on either side of any arm 11, so that when the bars 10 are made to slide simultaneously in opposite directions (by means hereinafter described) any one or more of the arms 11 may be shifted in one direction or the other, and any one or more of the slides may be shifted as desired, depending entirely on the adjustment of the pins or catches 12. Each catch 12 consists preferably of a small pin secured to a flat spring, and adapted to be inserted in a suitable perforation in the sliding bar 10. When these pins are drawn out of the said perforations, the arms 11 will not be moved as the bars 10 slide to and fro. The said sliding bars 10 may be operated as follows: A T-lever 13 is pivoted at the point where its two arms are joined to the stem of the T, said stem projecting horizontally, and the arms project respectively upward and downward from the pivot. The bars 10 are flexibly connected respectively to the opposite arms of said T-lever 13, and are made to reciprocate in opposite directions when the T-lever is made to oscillate. Said lever is oscillated by depressing a treadle 14 projecting from the rock-shaft 15 whose horizontal arm 16 is connected to the stem of the T-lever 13 by a suitable link 17. When the treadle is released the said devices are returned to their normal position without disturbing the slides, for example, by a weight 18 attached to an arm 19 projecting from the rock-shaft 15, or by any other suitable means, whereupon the device is ready to be again operated to shift the slides of the organ to form any other desired combination of stops, the catches 12, of course, having been first suitably readjusted for that purpose. There may be if desired a separate set of sliding rods 10 for the great organ and for the swell organ respectively, both of which may be operated by a single treadle 14.

The rock-shaft 15 can be operated in any convenient 0r suitable way, as, for instance, it may be operated pneumatically, and I therefore do not wish to be understood as limiting myinvention to employing the pedal 14 to actuate the rock-shaft 15.

The organ may be provided with any convenient number of independent slide-shifting devicesof the kind just described. The main purpose of having the slide-shifting devices returned to their normal position after the same have been operated, is to enable a number of such slide-shifters to be operated successively; thus (Fig. 1) there may .be, say, four treadles 14, each of which may be operated at a different interval of time, whereby as many distinct transitions may be had from one combination of stops to another, the catches 12in the slide-shifting bars 10 returning to their normal position, as aforesaid, immediately after having been used, so as not to interfere with the operation of the otherthreeslide-shiftingdevices. WVereonly one transition required, it would besuficient to have only a single reciprocating bar 10, which might then serve for the insertion of all the catches 12, some of the arms 11 controlling the diiferent slides being shifted for ward, for example, when the treadle 14- is de* pressed, and others being shifted backward, for example, when the weight 18 returns the device to its normal position, the number of slides shifted in one direction or the other depending, of course, on the adjustment of the catches 12. With this construction, however, the catches 12 would have to be readjusted for every transition from one combination of stops to another.

Having fully described my invention, what I desire to claim and secure by Letters Patent of the United States is 1. In an organ, the combination of a plurality of slides, slide-shifting members suitably connected to the respective slides, two reciprocating bars having each a series of adjustable catches for engaging and operating any predetermined number of said slide-shifting members, and means for actuating said bars to reciprocate in opposite directions, whereby the performer may pass instantly from one combination of stops to another.

2. In an organ, the combination of two reciprocating bars, adjustable catches carried by said bars and controlling the shifting of the slides in and out of register, a T-lever having its opposite arms flexibly connected with said reciprocating bars respectively, a treadle, and suitable connection between said treadle and the stem of the T-lever, whereby when said treadle is depressed said bars will move in reverse directions, for the purpose set forth.

3. In an organ, the combination of a plurality of slides, rock-shafts having arms suitably connected to said slides, stops connected to the respective rock-shafts and controlling the individual slides respectively, two parallel sliding bars between which projects an arm of each rock-shaft, said arms being adapted to normally move to and fro freely between said parallel bars, adjustable catches in both bars adapted to be set beforehand to engage or to pass the respective arms of said rock-shafts as said sliding bars movein opposite directions, and actuating mechanism for impelling said bars to slide to and fro in opposite directions.

4. In an organ, the combination of a plurality of slides, adj ustable slide-shifting mechanism for shifting simultaneously any predetermined number of slides, actuating means controlled by the performer for operating said slide-shifting mechanism, and comprising a suitable Weight or spring for returning said slide-shifting mechanism to its normal position when the same has been operated, witlr out disturbing the slides.

In testimony whereof I have hereunto set my hand and affixed my seal,-this 7th day of July, 1893, in the presence of the two subscribing witnesses.

RIOIIARD WALTER JACKSON. 

